30=12+3t

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Solution for 30=12+3t equation: 



30=12+3t

We move all terms to the left:

30-(12+3t)=0

We add all the numbers together, and all the variables

-(3t+12)+30=0

We get rid of parentheses

-3t-12+30=0

We add all the numbers together, and all the variables

-3t+18=0

We move all terms containing t to the left, all other terms to the right

-3t=-18

t=-18/-3

t=+6

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